baber/WOPTO huggingface dataset:
Patent GB-1496952-A (GB)
Title: Method of removing dissolved fluorides from an aqueous solution
IPC: C01B9/08
Filed: 1975-03-18
Abstract: 1496952 Purifiying fluoride-containing effluents ASEA-ATOM AB 18 March 1975 [19 March 1974 4 July 1974 (2) 18 Dec 1974] 11151/75 Headings C1A and C1C Dissolved fluorides (e.g. NH 4 F) are removed from the effluent of a plant manufacturing uranium fuel from uranium hexafluoride, by contacting the effluent with alkaline earth metal carbonate particles at least 75% of which have a grain size exceeding 0À08 mm., the particles thereby being transformed into alkaline earth metal fluoride particles of the same size. Preferably CaCO 3  (limestone), MgCO 3 , BaCO 3  or SrCO 3  of grain size 0À1-2À0 mm. is used. The effluent may be passed through one or more beds of the carbonate at 60-120‹ C. and a pressure in the range 1-10 atmospheres sufficient to inhibit liberation of CO 2 . Alternatively the carbonate may be added to the effluent at elevated (e.g. boiling) temperature, and the fluoride formed then filtered off. The effluent may be pre-treated with a peroxide to precipitate uranium compounds, and, after the carbonate treatment, may be distilled to precipitate uranium compounds and obtain from the vapours aqueous ammonium carbonate which may be acidified to give ammonium nitrate or sulphate. Plants for carrying out these processes are illustrated. Substances recoverable from the above process are thus (i) alkaline earth metal fluorides; (ii) unspecified water-insoluble uranium compounds; (iii) ammonium nitrate or sulphate.
Patent GB-560178-A (GB)
Title: Improvements in or relating to sparking plugs
IPC: H01T21/02
Filed: 1942-08-10
Abstract: 560,178. Sparking-plugs. CARINGTON, C. M., SHOOBERT, G. W:, WHEATLEY, C. C. H., and K.L.G. SPARKING PLUGS, Ltd. Aug. 10, 1942, No. 11186. [Class 7 (iv)] An electrode 17 is packed in the bore of the insulator 11 by inserting into the bore a filler 22 comprising glass, preferably boro-silicate glass, and clay, such as Bentonite, mixed with water to the consistency of a thick cream, inserting the electrode into the filler and heating the assembly to between 800‹ C. and 1050‹ C. without application of pressure to vitrify the filler. The platinum firing-point 18 fits closely in an aperture in the insulator. Alternatively, two firing-points may extend through lateral holes in the insulator. The silver or copper electrode is connected by a molybdenum wire 20 to the terminal 21. The wire may be replaced in part by a resistance.
Patent GB-401184-A (GB)
Title: Improvements in the operating mechanism for motor vehicles and the like
IPC: B60W10/18
Filed: 1933-04-21
Abstract: 401,184. Controlling motor vehicles. CHRISTIANSEN, M. A. A. P., 12, Ole Olsensalle, Gentofte, Copenhagen. April 21, 1933, No. 11188. [Class 79 (v).] Controlling mechanism for the throttle and either the brake or clutch or both is characterised by the features that the throttle is closed and the brake or clutch actuated successively by a continued movement of a single pedal which is connected by a rod to a throttleoperating shaft fitted with arms and a spring or springs. In the construction shown in Fig. 1 the pedal 1 is shown in its released position in which the throttle 35 is open. The pedal is connected by a link 2 to an arm 5 on a shaft 4 tending to rotate counter-clockwise under the action of a spring 6. The arm 5 is connected by a Bowden wire 11 to the throttle arm 10, the outer Bowden member 12 being fixed at one end at 18 and connected at its other end to an arm 7 which is loose on the shaft 4 and is normally pressed by a spring 8 against a fixed stop 9. The arm 7 carries a pin 15 working in a slot 14 in the arm 5. When the pedal 1 is depressed the arm 5 rotates and pulls on the wire 11, the arm 7 being held against the stop 9 by its spring 8, so that the throttle closes. When the pin 15 reaches the end of the slot 14 the two arms 5, 7 move as one without any further action on the throttle wire 11. Further depression of the pedal 1 causes it to bear against and operate the brake or clutch pedal 17. In the construction shown in Fig. 4 the link 2 is connected to an arm 23 on a shaft 25 controlled by a spring 26. Another arm 24 on the shaft carries a pin working in a cam slot in a sliding block 22 which is connected by links 21 to the throttle 35. As the pedal 1 (not shown) is depressed, in the first part of its movement the pin moves along the cam slot 29 and closes the throttle, but in the second part of its movement the pin moves along the part 30-31 of the slot which is a curve concentric with the shaft 25 so that the throttle is not affected by this latter movement. The brake or clutch pedal is actuated by the second part of the movement of the pedal 1 in the same way as in Fig. 1. The link 2 may have a spring coupling therein, so that it remains invariable in length while the throttle is being closed, but can shorten under excessive thrust during the later movements of the pedal 1. A lost-motion connection may be provided between the wire 11 and the arm 5, or the cam slot 29 may be extended to provide some lost motion.
Patent GB-900197-A (GB)
Title: Improvements in electric motor control apparatus
IPC: H02P27/02
Filed: 1960-03-30
Abstract: 900,197. Control of A.C. motors. BROOKE, W., and HOWE, H. March 30, 1960, No. 11271/60. Class 38 (3). A control arrangement for a polyphase slipring induction motor M comprises saturable reactors Cc, Cd, Ce, as described in Specification 864.714 [Group XXXIX], at least in the rotor circuits. The impedance of the reactors is kept constant during variations of load by internal feedback, and is determined by D.C. control windings energized from a transformer E and rectifiers F, through a controller K1. Further, similar reactors C, Ca, Cb in the stator supply are excited from the same source. Movement of the controller arm 45 first cutsout resistance 53, thus gradually increasing the excitation of the stator reactors, and so decreasing their impedance; for low tension motors the resistance 53 may be omitted and full excitation applied immediately. Further movement, across resistance 55, similarly decreases the impedance of the rotor reactors, causing the motor to accelerate to a speed determined by the position of the arm. Full speed as an induction motor is reached at position 1; further movement to position 2 injects D.C. into the rotor at its star point from an additional secondary winding ES1 on transformer E and rectifiers FB, to accelerate the motor to synchronism and then to give power factor correction. This injected current is controlled by further saturable reactors GR whose excitation is adjusted by a rheostat Kr. In alternative arrangements two reactors replace the three in either the stator or rotor of a three-phase motor, and an arrangement for a two-phase rotor is also described (Fig. 3, not shown). Specification 900,196 also is referred to.
Patent GB-1027049-A (GB)
Title: Improvements in or relating to supporting structures such as shelf supports
IPC: A47B47/02
Filed: 1963-03-21
Abstract: 1,027,049. Furniture joints; shelving. WILLIAM FIRTH & CO. Ltd. March 21, 1963 [Oct. 18, 1962], No. 11330/63. Headings A4B and A4W. A shelving structure is formed of steel bars, as at 25, 32, 33, 34, 42, each comprising two mutually perpendicular sides 1, 2 having inturned and out-turned rims 3, 4 respectively held together in abutment by brackets, as at 26, 27, 35, 36, 41, having at least two arms 5, 5a and 6, 6a having similar L-shaped sections, the arms being held to the bars by holding means, such as sleeves 28, 29, 37, 38, 39 or spring clips 43. Figure 9 depicts two brackets 26, 27 secured to a vertical bar 25 by sleeves 28, 29 which engage over the rims 3, 4 and are securely held by screws 30, 31 extending through threaded holes in the sleeves into the junctions of the rims 3, 4 with the sides 1, 2. Figure 10 shows a joint at which two horrizontal bars 32, 34 are secured to a vertical bar 33 by two brackets 35, 36 and three sleeves 37, 38, 39. Alternatively, the two brackets 35, 36 may comprise a single bracket having three arms. A smaller bracket 41 (Fig. 12) is secured to a bar 42 by a spring clip 43 which engages round the rim 4, the bracket 41 being held in the bar 42 between the spring arm 18 of the clip and the rim 3 and being prevented from tipping by a flange 21 on the spring arm 18. Shelves 46 (Fig. 14) are adjustably supported on the structure of bars 45 either at their corners or along their edges.
Patent GB-1470371-A (GB)
Title: Method of and apparatus for supporting a structure
IPC: E01D19/04
Filed: 1974-03-08
Abstract: 1470371 Appliances for supporting loads REDPATH DORMAN LONG (CONTRACTING) Ltd 8 March 1974 [9 March 1973] 11443/73 Heading B8B [Also in Division E1] A bridge span (1) is moved across a gap (2) by the use of a plurality of spaced-apart stationary anti-friction support systems (4), Fig. 1 (not shown), each system comprising a frame 10 on which two shoes 12 (only one shown) are each pivotally mounted at 14, each shoe 12 having an upper surface 16 in which is formed a groove 24 in which a common endless belt 30 is located, the belt 30 having an inner facing of polytetrafluorethylene which runs in contact with a polytetrafluorethylene strip 25 in each of the grooves 24 so that there is a low coefficient of friction between the belt 30 and shoes 12. The support systems are arranged in pairs (4, 4<SP>1</SP>), the systems of each such pair being disposed on either side of the longitudinal centre line (8) of the span (1), Fig. 3 (not shown), and each support system includes a pair of hydraulic jacks 33, 34 disposed on either side of a fulcrum defined by an elongate bearing surface 36 and a channel 35, the jacks 33, 34 and the bearing surface 36 being mounted on a stationary base 38. In use of the systems the respective jacks 33, 34 are extended so that the load on each system is transmitted directly to the said jacks. The jack of each pair of systems (4, 4<SP>1</SP>) are interconnected as shown in Fig. 4 (not shown), and if the bridge span (1) bears more heavily on one of the systems of a pair the jacks are compressed thereby causing pressurized fluid to flow from those jacks to the jacks of the other support system of that pair which are thereby raised and take a greater share of the load. In the embodiment of Fig. 5 (not shown) each support system comprises two endless belts which pass about each shoe respectively.
Patent GB-1066843-A (GB)
Title: Azaphenthiazine derivatives
IPC: C07D487/04
Filed: 1963-03-22
Abstract: Compounds of the formula <FORM:1066843/C2/1> and their physiologically acceptable quaternary ammonium and acid addition salts, where Hal represents a halogen atom, Alk1 and Alk2 represent straight or branched chain alkylene groups with 1-6 C atoms, Y represents -CH2- or -CH2-CH2- and Z is H or an acyl group are prepared either by reacting a compound of the formula <FORM:1066843/C2/2> with a compound of the formula <FORM:1066843/C2/3> or by hydroxyalkylating a compound of the formula <FORM:1066843/C2/4> or by acylating the compound of the invention where Z is H.
Patent GB-1129106-A (GB)
Title: Improvements in or relating to spot type disc brakes
IPC: F16D65/14
Filed: 1966-03-16
Abstract: 1,129,106. Disc brakes. H. TEVES, E. A. TEVES, and M. TAUSEND, [trading as ALFRED TEVES MASCHINEN-UND ARMATURENFABKIK K.G.]. 16 March, 1966 [10 Sept., 1965], No. 11515/66. Heading F2E. In a spot type disc brake of the kind having a fixed cylinder 5 containing a pair of pistons 8, 9, one of which acts on the adjacent pad 2 while the other acts by way of a floating caliper 6, or tie-rods, on the opposed pad 2a, a mechanical applying means of the type comprising a manually rotatable member 10 formed with recesses on at least its face opposite the pad 2 for the reception of balls 13 which co-operate with these recesses and further recesses in a thrust ring 11, or a pair of thrust rings 11, 12 as shown, is interposed between the backing plate 3 of pad 2 and a thrust pin 16 forming part of an adjustable thrust member 15, a threaded pin 14 of which is screwed into the piston 9, the piston 8 being slidable on the pin 16. As a result, the hydraulic and mechanical elements operate independently of one another. The piston 8 may be arranged to contact the ring 12 during hydraulic operation such that the thrust member 15 comes into operation only during mechanical application of the brake. The caliper 6 is supported on the cylinder 5 by way of a rubber ring 17 and is also carried by a fixed support (not shown) through resilient buffers (also not shown). The pads are supported in an auxiliary caliper 4 secured to the fixed support.
Patent GB-271234-A (GB)
Title: Improvements relating to coin-freed mechanism
IPC: G07F5/02
Filed: 1926-05-01
Abstract: 271,234. Bigelow, A. P. May 1, 1926. Coin action, mechanical-connection. - A coin-freed mechanism comprises a, rotary coin-carrier 1 having a pair of stops 10,11 for limiting its movement relative to an arm 6, which is attached to the carrier by a spring 7 and is rotatable about the same axis 4. A spring-controlled pivoted catch 8, having a pin 9 to ride on the periphery of the carrier, normally retains the arm 6. When a coin 3 is inserted through a shoot 15 into a slot 2 in the carrier and the carrier is rotated by a handle 5, its protruding edge lifts the catch 8 by engaging the pin 9, thereby allowing the arm 6 to rotate. The arm 6 is rigid with the shaft 4 or with a. sleeve mounted thereon, and is connected to a gear wheel for operating any suitable mechanism. Reverse movement of the arm 6 is prevented by a spring seizing with the shaft 4 or with the sleeve. or by a ratchet device. If the arm 6 is carried by a sleeve, the carrier 1 may be fixed to the shaft 4. Rearward movement of the carrier is also prevented by a lug 13 engaging the pin 9.
Patent GB-436355-A (GB)
Title: A new or improved method of and apparatus for clustering short and ultra-short electro-magnetic waves
IPC: H01Q19/12
Filed: 1935-04-13
Abstract: 436,355. Directive wireless signalling. NAAMLOOZE VENNOOTSCHAP MACHINERIEEN - EN APPARATEN FABRIEKEN MEAF, 30, Croeselaan, Utrecht, Holland. April 13, 1935, No. 11527. Convention date, April 13, 1934. [Class 40 (v)] A directive array of shortwave aerials, spaced a halfwave apart as shown by the line of crosses in Fig. 1, is combined with a curved sheet or wire-gauze reflector 3, which concentrates the radiation (without altering its phase) in the two " shaded " beams, in a direction at right-angles to the original figure - of - eight field. The aerial-array is energized inphase, and may extend beyond the "open" apex 4 of the reflector. In Fig. 2 alternate aerials are energized in phase-opposition, as shown at + and -, and one curved reflector 6 is displaced by a quarter wave length from the other reflector 5 so as to maintain the phase-relation. In both cases the reflected beams pass substantially clear of the aerial-array and accordingly do not interfere with it. The dipole aerials may be replaced by small frame aerials, and the reflecting surfaces may be formed of a series of rods. The arrangement is applicable to reception as well as transmission. Some of the aerials may be energized indirectly from the others. The reflectors may be derived from the sphere, ellipse, hyperbola, or parabola.
Patent GB-434033-A (GB)
Title: Improvements in hasp fastenings for attache and suit cases and the like
IPC: E05B65/50
Filed: 1934-04-18
Abstract: 434,033. Hasp fastenings. PEEL, A. L., 23, Somerset Road, Handsworth Wood, Birmingham. April 18, 1934, No. 11619. [Class 44] The spring and pivot of hasp fastenings for attache cases are integral parts of the fittings. The hasp plate 3 has its end portion rolled to form the pivot bar 5, and the attachment plate 1 is provided with rolled seatings 2 and an integral curved spring tongue 6 to cause the hasp plate to swing out when released. In the modification shown in Fig. 4, the attachment plate 1 and the hasp plate 3 are formed in one piece from spring steel or the like. A hollow arched rib 13 extends across the piece and constrains the part 3 to swing outwards. In the further modification shown in Fig. 6, the plate 1 has a slot 15 and curved pivot seatings 2. The hasp plate 3 has a rolled end forming the pivot bar 5 arranged out of the plane of the plate so that the engagement of its curved part 16 with the attachment plate 1 causes the plate 3 to swing outwards.
Patent GB-428646-A (GB)
Title: Improvements relating to the control of selecting switches for use in automatic telephone and other selective systems
IPC: H01H63/22
Filed: 1934-04-18
Abstract: 428,646. Automatic exchange systems. SIEMENS BROS. & CO., Ltd., Caxton House, Tothill Street, and HUMPHRIES, H. E., 61, Rochester Way, Blackheath, both in London. April 18, 1934, No. 11670. Addition to 405,096. [Class 40 (iv)] The arrangements described in the parent Specification for effecting the step-by-step movement of a selector which is driven by an individual electric motor under the control of a magnet adapted when energized to remove a stop from engagement with the gear-train are modified by the use of a high-speed relay which holds the stop magnet until the completion of the step. This relay PX, which may be of the kind described in Specification 405,436, [Group XXXVII], is of high resistance and is connected across corresponding terminals of the motor coils M1, M2, so that it is traversed by current in one direction or the other according to the position of contact m. In certain cases it may be polarized to enable the selector to take a double-step for each impulse. In Fig. 1, the stop magnet LM energizes at the beginning of an impulse over contact a1 and prepares the motor circuit which is completed at contact a2 at the end of the impulse. Relay PX also energizes and holds LM until the change-over of contact m, when PX is first short-circuited and then connected up in the reverse direction. Fig. 2 shows a modification of this arrangement in which relay PX also controls the motor circuit, an initial circuit for the motor and PX being made momentarily during the change-over of make-before-break contact a at the end of the impulse. In Fig. 3, the stop magnet LM energizing at the beginning of an impulse, completes the circuit for the motor M1, M2 and PX, and also connects up a relay PA which locks for the duration of the impulse and opens the energizing circuit of LM. This arrangement is modified in Figs. 4, 5, (not shown), by making the operation of relay PA dependent on that of PX. The selector may then be arranged to take a double-step per impulse by using a polarized relay for PX or by connecting a rectifier in series, PX in this case remaining inoperative until contact m changes over in the middle of the double-step.
Patent GB-234470-A (GB)
Title: Improved manufacture of brown sulphurised dyestuffs
IPC: C09B49/06
Filed: 1925-05-05
Abstract: Brown sulphur dyestuffs are prepared by heating 2-methyl-3-amino-6-oxyphenazine with alkali polysulphide and with or without a metal compound to above 180 DEG  C.  In examples the compound is heated with sodium sulphide and sulphur to 190 DEG  C. to yield a dyestuff giving brown tints on cotton from a sodium sulphide bath, and with sodium sulphide and copper sulphate to 235-240 DEG  C. to obtain a dyestuff dyeing cotton blackish-brown from a sulphide bath.
Patent GB-1173699-A (GB)
Title: Copper Plating
Inventor: ABBOTT CHARLES NELSON
IPC: C25D3/38
Filed: 1968-03-11
Abstract: 1,173,699. Electro-deposition of copper. K.E. WRAY, R.H. WRAY, J.H. CAINE and C.S. HARTZELL [trading as DAYTON BRIGHT COPPER CO. March 11, 1968 [June 15, 1967], No. 11703/68. Heading C7B. An electrolyte for electro-plating copper comprising an aqueous soltuon of copper sulphate and free sulphuric acid has dissolved therein an additive composition comprising a sulphurized sulphonated aromatic or hydro-aromatic hydrocarbon or substitution product thereof, e.g. sulphurized sulphonated benzene, toluene, xylene, naphthalene, anthracene, phenanthrene or diphenyl or their hydrogen derivatives; an amino derivative of a triaryl methane, which compounds are dyestuffs examples of which appear in the Specification; and a levelling additive compound containing the radical: - Tetrazolium, thiazolidine, hydrazido, hydrantoin, imidazolidine, benzimidazole, tretrazole and thiocarbazono compounds which contain the above radical appear in the Specification.
Patent GB-846735-A (GB)
Title: Transistor amplifier circuits
IPC: H03G1/00
Filed: 1957-04-10
Abstract: 846,735. Transistor amplifier circuits. ADMIRAL CORPORATION. April 10, 1957 [May 7, 1956], No. 11721/57. Class 40(6). A transistor amplifier stage in a multi-stage amplifier has its baseemitter bias derived from the common power supply for the stages, the bias being of such a value that the transistor operates on a part of its characteristic where the gain varies inversely with the bias so that the increase of gain of the rest of the amplifier with increasing power supply voltage is compensated. The Figure shows a superheterodyne radio receiver comprising a common emitter transistor IF amplifier stage 16. The emitter circuit is self biased by a resistor 25 and the base is biased by a potentiometer 33, 34 to a point beyond that corresponding to peak gain so that the amplification decreases as the bias increases. By this means variations in the gain of the rest of the receiver due to the use of a variable common supply source such as a solar battery is compensated. Common collector and common base stages (Figs. 3 and 4, not shown) may alternatively be used.
Patent GB-1373674-A (GB)
Title: Method of manufacturing and press for the hydrostatic extrusion of tubing
IPC: B21C23/00
Filed: 1972-03-14
Abstract: 1373674 Extruding ALLMANNA SVENSKA ELEKRISKA AB 14 March 1972 [15 March 1971] 11734/72 Heading B3P A hydrostatic extrusion press for tubes comprises a mandrel 5, a billet holder 9 slidable along the mandrel, a die 3 and a pressure generating piston 2 which enters a high pressure cylinder 1. The billet 11 is mounted on the mandrel 5 and the cylinder space behind the billet holder is pressurized by the piston 2. The billet holder 9 has a valve 10 which initially prevents hydrostatic fluid reaching the billet so that the pressure exerted behind the holder pushes the billet towards the die 3 to upset the nose of the billet on to the mandrel. As the pressure increases the valve opens and the billet is extruded hydrostatically. The nose of the billet is preshaped so that only a small zone is upset.
Patent GB-611709-A (GB)
Title: Improvements in or relating to looms
IPC: D03J1/08
Filed: 1944-06-21
Abstract: 611,709. Looms. SULZER FRERES SOC. ANON. June 21, 1944, No. 11782. Convention date, July 9, 1943. Drawings to Specification. [Classes 142(ii), 142(iii) and 142(iv)] Wide, woven fabric is divided into strips while in the loom by stretching the fabric transversely by one or more pairs of temples and cutting the weft threads adjacent the strips in a region in line with the points of entry to and exit from the temples. The weft threads may be cut between two pairs of twisted binding threads. The severed edges of the strips may be held by temples additional to those at the extreme edges of the fabric.
Patent GB-200613-A (GB)
Title: Improvements in automatic relief valves
IPC: G05D16/10
Filed: 1922-04-27
Abstract: 200,613. Blakeborough, R. A., and Tart, H. April 27, 1922. Relief valves.-A relief valve particularly applicable for use as a surplus steam valve and of the type comprising a piston-actuated valve member c subject to inlet pressure under the control of a spring-loaded auxiliary relief valve i has a control valve h on the actuating supply pipe g and has the outlet k from the auxiliary valve connected to the outlet side of the main valve. The loading spring for the auxiliary valve has an adjusting screw provided with an indicating pointer j adapted to work in a graduated slot. The main valve, spindle is connected by a fork l to a handactuating lever o, which lever is coupled by a link to a dashpot q and is also pivoted to a link r slidable over a locking bolt s adapted to be rotated to engage a cross slot r<1> to lock the valve in its closed position.